X-Original-To: pgsql-performance-postgresql.org@localhost.postgresql.org Received: from localhost (av.hub.org [200.46.204.144]) by postgresql.org (Postfix) with ESMTP id C2B289DCDA7 for ; Fri, 24 Mar 2006 10:57:47 -0400 (AST) Received: from postgresql.org ([200.46.204.71]) by localhost (av.hub.org [200.46.204.144]) (amavisd-new, port 10024) with ESMTP id 34016-04 for ; Fri, 24 Mar 2006 10:57:52 -0400 (AST) X-Greylist: from auto-whitelisted by SQLgrey- Received: from noel.decibel.org (noel.decibel.org [67.100.216.10]) by postgresql.org (Postfix) with ESMTP id B0AFD9DCDA5 for ; Fri, 24 Mar 2006 10:57:45 -0400 (AST) Received: by noel.decibel.org (Postfix, from userid 1001) id A53C956435; Fri, 24 Mar 2006 08:57:50 -0600 (CST) Received: (hashcash-sendmail, from uid 1001); Fri, 24 Mar 2006 08:57:49 -0600 Date: Fri, 24 Mar 2006 08:57:49 -0600 From: "Jim C. Nasby" To: Dave Dutcher Cc: pgsql-performance@postgresql.org Subject: Re: Problem with query, server totally unresponsive Message-ID: <20060324145749.GR90527@pervasive.com> References: <20060324102520.GS90527@pervasive.com> <000c01c64f51$cb71b590$8300a8c0@tridecap.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <000c01c64f51$cb71b590$8300a8c0@tridecap.com> X-Operating-System: FreeBSD 6.0-RELEASE-p4 amd64 X-Distributed: Join the Effort! http://www.distributed.net User-Agent: Mutt/1.5.11 X-Hashcash: 1:20:060324:dave@tridecap.com::AiGVSzh7w+xG7GDw:00000000000000000000 0000000000000000000000005fs0 X-Hashcash: 1:20:060324:pgsql-performance@postgresql.org::riuwy1alOTC1fMi6:00000 000000000000000000000000BQ4w X-Virus-Scanned: by amavisd-new at hub.org X-Spam-Status: No, score=0.108 required=5 tests=[AWL=0.108] X-Spam-Score: 0.108 X-Spam-Level: X-Archive-Number: 200603/498 X-Sequence-Number: 17935 On Fri, Mar 24, 2006 at 08:46:54AM -0600, Dave Dutcher wrote: > > > The machine has 2x Intel dual core processors (3GHz) and 2 Gigs of > ram. > > > > Unless I missed some big news recently, no such CPU exists. > > Hyperthreading is absolutely not the same as dual core, and many > people > > have found that it's best to disable hyperthreading on database > servers. > > Maybe I'm confused by the marketing, but I think those CPUs do exist. > According to New Egg the Pentium D 830 and the Pentium D 930 both are > dual core Pentiums that run at 3Ghz. It also specifically says these > processors don't support hyper threading, so I believe they really have > two cores. Maybe you are thinking he was talking about a 3Ghz Core > Duo. A quick google shows I'm just behind the times; Intel does have true dual-core CPUs now. -- Jim C. Nasby, Sr. Engineering Consultant jnasby@pervasive.com Pervasive Software http://pervasive.com work: 512-231-6117 vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461